AK7756 Datasheet, PDF (14/27 Pages) Asahi Kasei Microsystems – DSP with Mono CODEC + Mic/Lineout Amp

[AK7756]
■ DAC Block
1. fs=8kHz
(Ta= Tmin~Tmax, AVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2=0V; fs=8 kHz)
Parameter
Symbol
min
typ
max
Unit
Passband (±0.05dB)
(Note 27)
PB
0
3.62
kHz
(-6.0dB)
4
kHz
Stopband (Note 27)
SB
4.37
kHz
Passband Ripple
PR
±0.01
dB
Stopband Attenuation
SA
64
dB
Group Delay (Ts=1/fs) (Note 28)
GD
24
Ts
Digital Filter + Analog Filter
Amplitude characteristic 20Hz~3.5kHz
±0.5
dB
Note 27. Pass band and stop band parameters are related to sampling frequency (fs). PB=0.4535fs (at-0.05dB),
SB=0.5465fs.
Note 28. The digital filter’s delay is calculated as the time from setting 16-bit data into the input register until an analog
signal is output.
2. fs=16kHz
(Ta= Tmin~Tmax, AVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2=0V; fs=16kHz)
Parameter
Symbol
min
typ
max
Unit
Passband (±0.05dB)
(-6.0dB)
(Note 27)
PB
0
7.24
kHz
8
kHz
Stopband (Note 27)
SB
8.74
kHz
Passband Ripple
PR
±0.01
dB
Stopband Attenuation
SA
64
dB
Group Delay (Ts=1/fs) (Note 28)
GD
24
Ts
Digital Filter + Analog Filter
Amplitude characteristic 20Hz~7.0kHz
±0.5
dB
MS1218-E-00-PB
14
2010/08